Vuquest 3320g User Guide 149
• 1TWaits for a button push, then takes the image
L - LED State
Determines if the LEDs should be on or off, and when. Ambient illumination (0L) is
preferred for taking pictures of color documents, such as ID cards. LED illumina-
tion (1L) is preferred when the scanner is handheld. LED State is not available
when using Decoding Style (0P).
• 0LLEDs off (default)
•1LLEDs on
E - Exposure
Exposure is used in Manual Style only (2P), and allows you to set the exposure
time. This is similar to setting a shutter speed on a camera. The exposure time
determines how long the scanner takes to record an image. On a bright day, expo-
sure times can be very short because plenty of light is available to help record an
image. At nighttime, exposure time can increase dramatically due to the near
absence of light. Units are 127 microseconds. (Default = 7874)
• nERange: 1 - 7874
G - Gain
Gain is used in Manual Style only (2P). Like a volume control, the gain modifier
boosts the signal and multiplies the pixel value. As you increase the gain, the noise
in an image is also amplified.
•1GNo gain (default)
•2GMedium gain
•4GHeavy gain
•8GMaximum gain
Example of Exposure at 7874E with
fluorescent lighting:
Example of Exposure at 100E with
fluorescent lighting:
Example of Gain at
1G:
Example of Gain at
4G:
Example of Gain at
8G:
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